CVE-2026-2886 HIGH

CVE-2026-2886: Tenda A21 SetOnlineDevName set_device_name stack-based overflow

Vendor Tenda
Product A21
Weakness CWE-121
Published February 21, 2026
Last update February 23, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A weakness has been identified in Tenda A21 1.0.0.0. This affects the function set_device_name of the file /goform/SetOnlineDevName. This manipulation of the argument devName causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

Key dates

02Disclosure timeline

February 21, 2026 CVE published
February 23, 2026 Record updated